#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include <pthread.h>
#include <sched.h>
#include "Mutex.hpp"

using namespace LockModule;

int ticket = 1000;
Mutex mtx;


// 加锁方式1

// void *route(void *arg)
// {
//     char *id = (char *)arg;
//     while (1)
//     {
// 		mtx.Lock();
//         if (ticket > 0)
//         {
//             usleep(1000);
//             printf("%s sells ticket:%d\n", id, ticket);
//             ticket--;
// 			mtx.Unlock();
//         }
//         else
//         {
//             mtx.Unlock();
// 			break;
//         }
//     }
//     return nullptr;
// }


// 加锁方式2

void *route(void *arg)
{
	char *id = (char *)arg;
	while (1)
	{
		// 临界区
		{
			// RAII风格的互斥锁
			LockGuard lockguard(mtx); //临时对象，进作用域，构造函数加锁， 
			if (ticket > 0)
			{
				usleep(1000);
				printf("%s sells ticket:%d\n", id, ticket);
				ticket--;
			}
			else
			{
				break;
			}
		} // 出作用域，自动调用析构销毁
	}
	return nullptr;
}

int main(void)
{
	pthread_t t1, t2, t3, t4;

	pthread_create(&t1, NULL, route, (void *)"thread 1");
	pthread_create(&t2, NULL, route, (void *)"thread 2");
	pthread_create(&t3, NULL, route, (void *)"thread 3");
	pthread_create(&t4, NULL, route, (void *)"thread 4");

	pthread_join(t1, NULL);
	pthread_join(t2, NULL);
	pthread_join(t3, NULL);
	pthread_join(t4, NULL);

	return 0;
}